Shuttle-checking means for looms.



No. 763,122. PATENTED JUNE 2 1904.

I. snow. 1 SHUTTLE CHECKING MEANSYFOR LOOMS.

APPLICATION FILED APR. 2 1904.

K0 MODEL.

Patented June 21, 1904.

FEIcE.

PATENT ISAAC SNOW, OF LAIVRENOE, MASSACHUSETTS, ASSIGNOR TO DRAPERCOMPANY, OF HOPEDALE, MASSACHUSETTS, A CORPORATION OF MAINE.

SHUTTLE-CHECKING MEANS FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 763,122, dated June 21,1904.

Application filed April 2, 1904. Serial No. 201,233. (No model.)

To all whom it may concern.-

Be it known that I, IsAAo SNOW, a citizen of the United States, and aresident of Lawrence, county of Essex, State of Massachusetts, haveinvented an Improvement in Shuttle-Checking Means for Looms, of whichthe following description, in connection with the accompanying drawings,is a specification, like letters on the drawings representing likeparts.

This invention has for its object the production of novel andelfective'means for preventing rebound of the shuttle when it enters theshuttle-box of a loom. WVhen the shuttle strikes the binder, the latteris thrown outward, and if the loom is running at high speed the shuttlewill often hit the picker before the binder can return to properlyengage and hold the shuttle, and frequently the latter rebounds. HereinI have provided means governed by the impact of the shuttle upon thepicker to instantly return and press the binder firmly against theshuttle before the latter can rebound.

The novel features of my invention will be fully described in thesubjoined specification and particularly pointed out in the appendedclaims.

Figure l is a rear elevation of the end of a loom-lay and shuttle-boxthereon with one embodiment of my invention applied thereto andillustrated at the instant the full checking action is applied to theshuttle. Fig. 2 is a top or plan view thereof; and Fig. 3 is atransverse section on the line 3 3, Fig. 1, looking toward the right.

The lay A, shuttle-box thereon comprising a front plate 7), back wallbf, and top plate 6 a binder B pivotally mounted at its outer end on thelay at V, the picker P, and its stick or staff P may be and are of usualor wellknown construction.

The protector rock-shaft 3), its controllingspring S, Fig. 1, and theupturned binderfinger p to bear against the free end of the binder areof well-known construction and operate in usual manner.

In the embodiment of my invention herein illustrated a strap 1 issuspended below the lay and passed around the picker-stick, one end ofthe strap being fixed to and supported by a hanger 2, bolted to thefront of the lay. The other end of the strap is formed into a loop 3,through which is extended a depending leg 4, forming part of a bracket5, rigidly attached to the back of the lay, a collar 6 on the legsupporting the strap vertically. A second leg 7 depends from the bracketat the outer end thereof and forms a fixed abutment for and over whichthe rear side of the strap draws longitudinally, the abutment having arearwardly-projecting supportinglug 8 at its lower end, on which thebottom edge of the strap rests.

The legs 4 and 7 are offset rearwardly from the face of the bracket, asshown in the drawings, so that the rear side of the strap is therebyheld behind the plane of the rear side of the lay.

When the shuttle S engages the picker, the picker-stick P is thrownoutward and the two sides of the strap are pulled taut, as shown in Fig.2, tending to straighten the strap between the holding-leg 4 and theabutment 7 with a force proportional to the impact of the shuttle. uponthe picker.

I have provided means to draw in or slacken the rear side of the strapwhen the shuttle is picked from the box, and to this end a piece ofspring-wire is coiled to form two spirals 9 and 10, connected by yoke11, the leg 4: passing through the spirals, with the strap-loop 3between them.

The free end 9* of the spiral 9 bears against the bracket 5 and issecured thereto by inserting it in a socket 75 (see Fig. 1) above thetop of the leg 4, and the free end 1O of spiral 10 is pinned to the leg,while the yoke 11 bears against the outer face of the strap between theleg 1 and abutment 7 as clearly shown in Fig. 1.

The spirals are so wound that the tendency thereof is to throw theconnecting-yoke 11in; ward, thereby acting to form a bend in the strapand draw its rear side over the abutment when the shuttle is picked.

When the strap is tightened, due to boxing ot' the shuttle, thespring-coils are fiexed and the slack taken up, tending to flatten orstraighten the strap between the abutment and the leg 4. Such part ofthe strap thus has an inward and outward movement every time the shuttleleaves and enters the box, and this outward forcible movement isutilized to press the binder against the shuttle to prevent rebound.

Two cars 12 are formed on the bracket 5 above and between the dependingportions 4 and 7, and an upright lever 13 is fulcrumed between the earson a pin 14:, supported therein. At its upper end the lever is enlargedto form a head 15, which bears against the binder near its freeend,while the depending end of the lever extends below the lay and iswidened to form a foot 16,which crosses and rests against the outer faceof the strap between the leg 4t and the abutment 7. As the fulcrum 14 isnear the upper end of the lever and set out from the bracket, (see Fig.3,) the foot 16 tends to swing forward against the strap when the box isempty, the springs 9 and 10 at such time slackening and bending thestrap, as has been described, and at such time the foot 16 will be wellforward of a straight line passing through the leg 4 and the abutment.When the incoming shuttle strikes the swell of the hinder, the free endof the latter is thrown outward, swinging the head 15 of the leveroutward; but as the outward swing of the picker-stick tightens the strap1 the latter acts instantly upon the foot of and rocks the lever as thestrap is drawn more nearly straight between the leg 4 and abutment 7.Such rocking of the lever 13 forces its head inward and quickly pressesthe binder against the shuttle, holding the same effectually against anytendency to rebound from its impact with the picker. The harder the blowof the shuttle on the picker the greater will be the force actingthrough the strap to rock the lever 13, and thereby press the binderagainst the shuttle.

My invention is not restricted to the precise construction andarrangement herein shown and described, as the same may be modified orrearranged in various particulars by those skilled in the art withoutdeparting from the spirit and scope of my invention.

Having fully described my invention, what 1 claim as new, and desire tosecure by Letters Patent, is

1. A shuttle-box, a pivoted binder, a pickerstick, a strap passed aroundit and fixed at its ends, a fixed abutment adjacent one of the ends ofthe strap, a spring to form a bend in the strap therebetween, and alever fulcrumed adjacent the shuttle-box and at one end cooperating withthe binder, the other end of the lever crossing the bent part of thestrap, tightening of the latter due to boxing of the shuttle flatteningthe bend and rocking said lever to force the binder inward.

2. A shuttle-box, a pivoted binder, a pickerstick, a strap passed aroundthe same and having its ends fixed, a slaekener for the strap, a fixedabutment over which one side of the strap draws, and a lever fulcrumedadjacent the shuttle-box and at one end cooperating with the hinder, theother end of the lever crossing the strap between the abutment and theadjacent fixed end-of the strap, tightening of the latter by the outwardstroke of the picker-stick taking up the slack of the strap and actingto rock the lever and force the binder inward.

3. A shuttle-box, a pivoted binder, a pickerstick, a lever having adepending end and fulcrumed adjacent the shuttle-box and adapted tocooperate with the binder, a strap passed around the picker-stick andhaving its ends fixed, and a fixed abutment over which one side of thestrap draws, the depending end of the lever crossing and cooperatingwith the strap between one of its fixed ends and the abutment and out ofalinement therewith, whereby when the strap is tigl'ltened the leverwill be rocked to transmit additional pressure to the binder.

4. Ashuttle-box, a pivoted binder, a pickerstick, a strap looped aroundit and fixed at its ends, means to form a bend in one side of the strapwhen the shuttle is picked, and a lever fulcrumed adjacent theshuttle-box and at one end cooperating with the binder, the other end ofsaid lever crossing the bent portion of the strap on its concave side,outward movement of the picker-stick due to boxing of the shuttle actingto straighten the bend in the strap and thereby rock the lever to forcethe binder inward against the shuttle.

5. A shuttle-box, a pivoted binder, a pickerstick, a strap looped aroundit and fixed. at its ends, spring-controlled means to form a bend in oneside of the strap when the shuttle is picked, and a lever fulcrumedadjacent the shuttle-box and at one end cooperating with the hinder, theother end of said lever crossing the bent portion of the strap on itsconcave side, outward movement of the pickerstick due to boxing of theshuttle acting to straighten the bend in the strap and thereby rock thelever to force the binder inward against the shuttle.

6. In a loom, a lay having a shuttle-box thereon provided with a pivotedbinder, a picker-stick, a strap looped around it and fixed at its ends,a bracket secured to the back of the lay and having two depending legs,to the inner one of which an end of the strap is secured, the other legforming an abutment over which the strap draws, a spring-acting deviceto act upon and form a bend in the strap between said legs, and a leverfulcrumed on the bracket and at its upper end acting upon the free endof the hinder, the lower Intestirnony Whereof Ihave signedmyname 0nd ofthe lever crossing the bend of the strap to this specification in thepresence of two subon lts e meave side out of ahnernent with thesorihlng Witnesses.

log tightening of the strap by the incoming ISAAC SNOW. 5 shuttle actingthrough the bend in said strap Witnesses: 1

to rock said lever and press the top of the CHRISTOPHER W. VILsoN,

same inward against the binder. DUNCAN VVooD.

